PureBasic

Get an FTP Listing Entry's Last-Modified Time

Demonstrates the Chilkat Ftp2.GetLastModifiedTimeStr method, which returns the last-modified time of a cached directory-listing entry as an RFC 822 date-time string. The only argument is a zero-based index.

Background: The last-modified time is the workhorse timestamp: it updates whenever a file's contents change and is what sync and mirror logic compares to decide whether a file needs re-transferring. It is the most reliably reported of the three across FTP servers, and the RFC 822 string carries a timezone so comparisons are well defined.

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IncludeFile "CkFtp2.pb"

Procedure ChilkatExample()

    success.i = 0

    ;  Demonstrates the Ftp2.GetLastModifiedTimeStr method, which returns the last-modified time of a
    ;  cached directory-listing entry as an RFC 822 date-time string.  The only argument is a
    ;  zero-based index.

    ftp.i = CkFtp2::ckCreate()
    If ftp.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    CkFtp2::setCkHostname(ftp, "ftp.example.com")
    CkFtp2::setCkUsername(ftp, "myFtpLogin")

    ;  Normally you would not hard-code the password in source.  You should instead obtain it
    ;  from an interactive prompt, environment variable, or a secrets vault.
    CkFtp2::setCkPassword(ftp, "myPassword")

    success = CkFtp2::ckConnect(ftp)
    If success = 0
        Debug CkFtp2::ckLastErrorText(ftp)
        CkFtp2::ckDispose(ftp)
        ProcedureReturn
    EndIf

    success = CkFtp2::ckChangeRemoteDir(ftp,"public_html")
    If success = 0
        Debug CkFtp2::ckLastErrorText(ftp)
        CkFtp2::ckDispose(ftp)
        ProcedureReturn
    EndIf

    ;  GetDirCount retrieves the directory listing on the first call and returns the number of
    ;  entries.  A negative return indicates failure.
    n.i = CkFtp2::ckGetDirCount(ftp)
    If n < 0
        Debug CkFtp2::ckLastErrorText(ftp)
        CkFtp2::ckDispose(ftp)
        ProcedureReturn
    EndIf

    i.i
    For i = 0 To n - 1
        name.s = CkFtp2::ckGetFilename(ftp,i)

        ;  The value is an RFC 822 string such as "Fri, 21 Nov 1997 09:55:06 -0600".
        lastModified.s = CkFtp2::ckGetLastModifiedTimeStr(ftp,i)
        Debug name + "  modified " + lastModified
    Next

    success = CkFtp2::ckDisconnect(ftp)
    If success = 0
        Debug CkFtp2::ckLastErrorText(ftp)
        CkFtp2::ckDispose(ftp)
        ProcedureReturn
    EndIf



    CkFtp2::ckDispose(ftp)


    ProcedureReturn
EndProcedure